WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Do not use a caustic cleaning solution or damage to connecting rods may occur.
Mark and separate the parts and clean with solvent. Clean the oil passages.